T540p and Ubuntu 12.04 LTS and the Lenovo Ultra Doc 402A
Posted: Tue Jan 07, 2014 4:58 pm
First, I see that the forum is for the T4X series, and this is a T540P, but it's basically a T440p with a larger screen.
The config is the Intel 4700MQ, 16GB RAM, Samsung Pro 512GB SSD, Intel graphics, 2880x1620 screen. Overall, it's a great computer. The touchpad is not my favourite but I will learn to use it.
The OS is Ubuntu 12.04 LTS 64bit, with output from uname -a being:
Linux <hostname> 3.11.8-031108-generic #201311122252 SMP Wed Nov 13 03:53:29 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Some glitches out of the box are the hardware keys to control the brightness of the screen that was fixed by modifying /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Regrettably, Google Chrome consistently exhibits a video display problem where the rendering of the page is completely scrambled, or the colours are inverted. At first I thought it was caused by my rapidly scrolling with the scroll wheel of the attached mouse, but I was wrong as the page can scramble even while scrolling with PageUp/Down.
I can live with the above. I can't live with the following: I have the Ultra Dock 402A for this computer so that I can get dual displays via the dock. When I dock the computer, Linux doesn't appear to recognize the dock. The screen resolution of the laptop changes to a bizarre 4:3 aspect ratio, and the video is never pushed to the monitors attached to the dock. According to this page, http://www.thinkwiki.org/wiki/Docking_Solutions, it's a known problem. Now, since this OS is running kernel 3.11.xxxxxxx shouldn't the updated thinkpad-acpi driver be in the kernel?
I'm currently using a StarTech MDP2DPDVHD which provides DisplayPort to DVI/HDMI/DisplayPort to connect a single monitor and use the single monitor in tandem with the notebook screen.
I really want to use the dock, and this could be enough to push me to install Windows.
Help?
Thanks
The config is the Intel 4700MQ, 16GB RAM, Samsung Pro 512GB SSD, Intel graphics, 2880x1620 screen. Overall, it's a great computer. The touchpad is not my favourite but I will learn to use it.
The OS is Ubuntu 12.04 LTS 64bit, with output from uname -a being:
Linux <hostname> 3.11.8-031108-generic #201311122252 SMP Wed Nov 13 03:53:29 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Some glitches out of the box are the hardware keys to control the brightness of the screen that was fixed by modifying /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
Regrettably, Google Chrome consistently exhibits a video display problem where the rendering of the page is completely scrambled, or the colours are inverted. At first I thought it was caused by my rapidly scrolling with the scroll wheel of the attached mouse, but I was wrong as the page can scramble even while scrolling with PageUp/Down.
I can live with the above. I can't live with the following: I have the Ultra Dock 402A for this computer so that I can get dual displays via the dock. When I dock the computer, Linux doesn't appear to recognize the dock. The screen resolution of the laptop changes to a bizarre 4:3 aspect ratio, and the video is never pushed to the monitors attached to the dock. According to this page, http://www.thinkwiki.org/wiki/Docking_Solutions, it's a known problem. Now, since this OS is running kernel 3.11.xxxxxxx shouldn't the updated thinkpad-acpi driver be in the kernel?
I'm currently using a StarTech MDP2DPDVHD which provides DisplayPort to DVI/HDMI/DisplayPort to connect a single monitor and use the single monitor in tandem with the notebook screen.
I really want to use the dock, and this could be enough to push me to install Windows.
Help?
Thanks